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    ENGINE DEVICE
    3.
    发明申请
    ENGINE DEVICE 审中-公开

    公开(公告)号：US20180252174A1

    公开(公告)日：2018-09-06

    申请号：US15760169

    申请日：2016-05-24

    Applicant: Yanmar Co., Ltd.

    Inventor： Ryoichi HAGIWARA ,  Kazuteru TOSHINAGA ,  Masayoshi DOI ,  Taishi MURAKAMI ,  Tatsuro OHSARA ,  Osamu YAMAGISHI

    IPC: F02D41/00 ,  F02D19/06 ,  F02D29/02 ,  B63H21/14

    Abstract: An engine device (21) including: an intake manifold (67) configured to supply air into a cylinder (77); an exhaust manifold (44) configured to output exhaust gas from the cylinder (77); a gas injector (98) which mixes a gaseous fuel with the air supplied from the intake manifold (67); and a main fuel injection valve (79) configured to inject a liquid fuel into the cylinder (77) for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder 77 to a diesel mode in which the liquid fuel is supplied into the cylinder (77), a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.

    ENGINE DEVICE
    6.
    发明申请
    ENGINE DEVICE 审中-公开

    公开(公告)号：US20200284213A1

    公开(公告)日：2020-09-10

    申请号：US16884171

    申请日：2020-05-27

    Applicant: YANMAR CO., LTD.

    Inventor： Ryoichi HAGIWARA ,  Kazuteru TOSHINAGA ,  Masayoshi DOI ,  Taishi MURAKAMI ,  Tatsuro OHSARA ,  Osamu YAMAGISHI

    IPC: F02D41/00 ,  F02D19/06 ,  F02D41/30 ,  F02D19/10 ,  F02D41/40 ,  F02D29/02

    Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.

    GAS ENGINE
    8.
    发明申请
    GAS ENGINE 审中-公开
    燃气发动机

    公开(公告)号：US20160369720A1

    公开(公告)日：2016-12-22

    申请号：US15113958

    申请日：2015-01-15

    Applicant: YANMAR CO., LTD. ,  JAPAN SHIP MACHINERY & EQUIPMENT ASSOCIATION

    Inventor： Tatsuro OHSARA ,  Keiji MATSUMOTO ,  Osamu YAMAGISHI

    IPC: F02D41/00 ,  F02D19/02 ,  F02M21/04

    CPC classification number: F02D41/0027 ,  B63H21/14 ,  B63H21/17 ,  F02B29/0437 ,  F02B37/16 ,  F02B43/00 ,  F02B61/04 ,  F02D19/02 ,  F02D19/024 ,  F02D23/00 ,  F02D29/06 ,  F02D41/0007 ,  F02D41/34 ,  F02D2041/1412 ,  F02D2250/31 ,  F02M21/0215 ,  F02M21/0278 ,  F02M21/04 ,  Y02T10/144 ,  Y02T10/146 ,  Y02T10/32 ,  Y02T70/5218

    Abstract: A gas engine is provided that suppresses fluctuation of the actual air-fuel ratio even when a load fluctuates. A gas engine (1) in which at least one opening degree (D) selected from the opening degree of an air supply valve (5a) and the opening degree of a bypass valve (5b) is corrected so that an adequate target air-fuel ratio (λt) is achieved. wherein a target gas pressure (Pgt) and a target gas-jetting time (Tt) of a fuel gas are calculated on the basis of fluctuations of an actual load (L), the gas pressure is corrected on the basis of the target gas pressure (Pgt), and at least one opening degree selected from the opening degree of the air supply valve and the opening degree of the bypass valve is corrected on the basis of the amounts of change in the target gas pressure (Pgt) and the target gas-jetting time.

    Abstract translation: 提供一种燃气发动机，其即使在负载波动时也抑制实际空燃比的波动。 一种气体发动机（1），其中从空气供应阀（5a）的开度和旁通阀（5b）的开度中选择的至少一个开度（D）被校正，使得适当的目标空气燃料 比率（λt）。 其中，基于实际负荷（L）的波动来计算燃料气体的目标气体压力（Pgt）和目标气体喷射时间（Tt），基于目标气体压力校正气体压力 （Pgt），并且基于目标气体压力（Pgt）和目标气体的变化量来校正从供气阀的开度和旁通阀的开度选择的至少一个开度 喷射时间。

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